The Pittsburgh Steelers helmet is one of the most classic looking helmets in the NFL. The simple, small circle logo with the three diamonds and small Steelers text just looks like classic Americana football. Even the simple black color evokes the feelings of good versus bad, back when it was red team versus black team, or white team versus blue team. It harkens back to a simpler time.
That being said, that only means that it is time for an upgrade. Classic is great, but change is good too. The bottom left design with the three giant diamonds still feels like classic Steelers, but the large size of the diamonds gives it that extra pop, like it is the classic logo evolved. The scratched-out top right design is very radical and would definitely set the team apart from other NFL teams.